49 



Bul im US Scopol!. scito 



41. Colobus 177 



42. Cochlicellus 178 



43. Napaeus 179 



44. Merdigcrus 179 



45. Cyliudrus 180 



46. Brephulus 181 



47. Racliis 182 



48. Petraeus -ylnQ- • 183 



49. Mirus 184 



50. Chondrus 184 



XIII. Bostrjx Troschel. . . ., .^^ 185 



XIV. Partulus Beck. . . . !^'. 186 



XV. Achatinella Swainsoii 188 



XVI. Achatina Lara 189 



1. Archachatina 189 



2. Pseudachatina 192 



3. Columua 193 



4. Corona 193 



5. Chersina 194 



6. Electra 194 



7. Melia 195 



8. Subulina 195 



9. Homorus 19$ 



XVII. Glandina Schumacher 197 



1. Glandina 197 



2. Cionella 198 



XVIII. Azeca Leach 199 



XIX. Pupa Draparnaud 200 



1. Gibbulina 200 



2. Strophia 202 



3. TorquUIa 203 



4. Papilla 205 



5. Vertigo 205 



6. Scopelophila 206 



XX. Cjlindrclla Pfeiffer 206 



1. Lcia 207 



4 



